Manufacture of bimetals.



UNITED STATES PATENT OFFICE.

ANSELME ASTRUC, OF GOURBEVOIE, FRANCE.

MANUFACTURE OF BDEETALS.

No. 924,413. Specification of Letters Patent. Patented June 8, 1909.

Application filed May 6, 1907. Serial No. 372,228.

To all whom it may concern: point of the metal casing; the whole is Be it known that I, ANSELME AsTRUo, then passed rapidly through a rolling citizen of the French Republic, residing at machine. The composite metal thus ob- Courbevoie, Department of the Seine, t-ained is then converted into plates of the have invented certain new and useful Imdesired thickness. The adhesion of the provements in Manufacture of Bimetals, of metal support tothe metal casing is obwhich the following is a specification. tained merely by the pressure of the rolling The invention has for its ob'ect aprocess cylinders. No welding preparation is infor the manufacture of bi-metals with a base terposed between the two metals, the contact of steel or any other metal, that is to say of between which is thus absolutely intimate. metallic compounds comprising a metal, Having now particularly described and such as steel for example, covered on both ascertained the nature of my said invention faces or on one of them only by a casing and in what manner the same is to be permetal, such as copper, nickel, silver, etc. formed, I declare that what I claim is or by an alloy, sue as brass, bronze or the The herein described process for the manu- 'like. This rocess permits of obtaining .facture of bi-metals, comprising the cleanperfect adhesion between the metallic casing ing and drying of two separate metallic and its support without melting either the bodies in sheet form, one of which is less casing or t e support, and without interposrefractory than the other, applying one of ing any weldin preparation between the two said bodies upon and over the other so that metals, as in t e usual processes. the contiguous faces of the two bodies will The steel or other metal which'is to serve directly contact, then heating the associated as the support is used in the form of large bodies in a non-oxidizing atmosphere at a plates or sheets of appropriate thickness. temperature lower than is required to melt The face or faces to w oh the casing metal the one body which is less refractory than or allo is to be applied is carefully cleaned the other, and then subjecting the associated and al owed to dry. A sheet'of the metal bodies to the action of pressure rolls to or alloy intended to form the casing is cause the adherence of the two bodies. cleaned carefully and allowed to dry. The In testimony whereof I have hereunto set casing metal is then arranged upon the my hand in presence of two subscribing meta support in such a manner that the witnesses.

latter is covered on one or both of its faces.

The whole is heated in a furnace with a re- ANSELME R ducing atmosphere or at all events a non- Witnesses: v oxidizing atmosphere until the metal support EMILE KLoTz,

attains a temperature-adjacent to the melting CARL BLUM. 

